3．Which of the following statements best explains foot pain?

　　A．Not all of it can be avoided.

　　B．People can't slow its process.

　　C．Walking more will stop foot pain.

　　D．Preventive actions can't work well.

　　答案：A　细节理解题。根据第四段提到“The following questions will help you assess whether you should take more preventive action as you age. Do you have flat feet or high arches(足弓)？”第五段“Do your shoes fit？”最后一段“Do you walk？”可知没有一项可以避免，故选A项。

　　4．If your feet are 26 cm long at 23, what is the probable length of your feet when you are 43?

　　A．26.2 cm

　　B．25.2 cm

　　C．26 cm

　　D．25 cm

　　答案：A　细节理解题。根据倒数第二段提到“Feet flatten and lengthen with age, so if you still stick to the shoe size you wore at the age of 21, get your feet measured.”脚扁平和长度会随着年龄的变化而变化的，如果你还坚持21岁时的脚长的话，你必须得量一下你的脚了，故选A项。

　　B

　　(2015·云南省昆明一中月考)

　　Keeping a busy social life among lots of friends may keep people thinner than spending hours doing some exercises, according to scientists. They say that socializing and meeting with friends help increase levels of brown fat in the body which burns calories to produce heat.

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